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Agenda for FOGL Meeting September 27, 2016

Room opens for socializing and conversation at 6:45 PM

  • Introductions
  • Rachael Gravon
    • Cyanobacteria at Green lake and other Lowland  King County Lakes, presence and management
  • Richard Fleming
    • Green Lake To Do List
    • Densmore Inlet Refit
    • Nominations for Officers – October Elections
  • Ellen Hewitt
    • Webmaster’s Report
  • Gayle Garman
    • Treasurer’s Report
  • Next Meeting – October 25, 2016. –  Elect New Officers
  • Adjourn

Thanks to the Hearthstone for hosting our meeting.

Friends of Green Lake (FOGL) is a non-profit group in Seattle, Washington, whose mission is to ensure a healthy Green Lake for wildlife and recreation, for today and tomorrow.

Thanks for Helping Us Make the New Green Lake To Do List!

At the Friends of Green Lake (FOGL) meeting on January 26, 2016, FOGL was joined by several staff from the Seattle Department of Parks and Recreation (SDPR). We had a long and productive discussion about Green Lake Park and its various assets, issues and problems. At the conclusion of the meeting it was suggested by SDPR that FOGL prepare a list of items we felt should be addressed in the Park.

Alder tree growing between blocks of the shoreline wall on east shoreline.

We discussed this topic at the next two FOGL meetings, after suggesting that member bring a list of items needing attention. At the May meeting we went through the suggested items and possible solutions/actions. At the June meeting a draft of the “To Do” List was presented and subjected to an extensive discussion. The July 20th document is the product of all of this activity.

Very high steps at West Beach

The To Do List identifies issues or problems, provides location information if appropriate, and suggests possible corrective measures. Where possible, one or two photographs are included to illustrate the issue/problem, as shown above. The list was kept to less than 20 issues that we felt could reasonably be done in the near future. We did not prioritize the items.

FOGL hopes that the “To Do” List will stimulate discussions about the needs of Green Lake Park and we hope to participate in these discussions. We hope other Park users will join in these discussions.

Minutes for June 28, 2016 Meeting

Friends of Green Lake Meeting, Tuesday 28 Jun 16, Hearthstone Boardroom

Convened at 7:00 PM

Attendees:
Richard FlemingKaren SchurrGayle GarmanGaret MungerEllen HewittBrian DeLucaMarcia Norman

Introductions and initial comments by Richard, then first order of business:

Richard provided on the display screen:

  • an aerial photo of the park area, to show the treatment pattern of the alum delivery barge.
  • photos of a persistent, illicit, illegal campground established on Green Lake Park grounds.

Read More »

Agenda for FOGL Meeting June 28, 2016

Room opens for socializing and conversation at 6:45 PM

  • Introductions
  • Richard Fleming
    • Recent Activities at Green Lake
  • Richard Fleming
      Finalize the Draft Green Lake TO DO List.
    • Who do we send it to?
    • Post on Web?
    • Present at Green Lake Community Council.
    • Attachments.
  • Ellen Hewitt
    • Webmaster’s Report
  • Gayle Garman
    • Treasurer’s Report
  • Next Meeting – September 27, 2016. Establish Nominating Committee for elections in October
  • Adjourn

Friends of Green Lake (FOGL) is a non-profit group in Seattle, Washington, whose mission is to ensure a healthy Green Lake for wildlife and recreation, for today and tomorrow.

Agenda for FOGL Meeting May 24, 2016

Room opens for socializing and conversation at 6:45 PM

  • Introductions
  • Richard Fleming
    • Recent Activities at Green Lake
  • Richard Fleming
    • Draft Green Lake TO DO List.
    • At the last meeting a wish list of things that need to be done at Green Lake Park was compiled. This Tuesday evening the list will be reviewed, discussed, and new suggestions added. The list may also be prioritized. When complete, the list will be presented to the Seattle Parks Department for consideration and action.
  • Ellen Hewitt
    • Webmaster’s Report
  • Gayle Garman
    • Treasurer’s Report
  • Next Meeting – June 28, 2016
  • Adjourn

Friends of Green Lake (FOGL) is a non-profit group in Seattle, Washington, whose mission is to ensure a healthy Green Lake for wildlife and recreation, for today and tomorrow.

Green Lake Alum Treatment Effectiveness Continues to Be Apparent

From Rob Zisette, Principal Scientist, Herrera, Inc.
Photos by Richard Flemimg and Rob Zisette

Water turns from green to blue after the alum treatment

Water goes from green to blue after the alum treatment

The 2016 Green Lake alum treatment was successfully conducted by HAB Aquatic Solutions over a 6-day period from April 5 – 10. As planned, a total of 81,744 gallons of aluminum sulfate (alum) and 40,905 gallons of sodium aluminate (buffer) were applied evenly over the entire lake. The treatment was monitored on a full-time basis in accordance with the water quality monitoring plan and permit requirements. The treatment increased water transparency (Secchi depth) from 9 to 19 feet and changed the color from green to blue, and had no effect on the lake pH or dissolved oxygen concentrations.

The treatment boat spread alum and buffer evenly over the entire lake 12 hours a day for 6 days.

Alum and buffer were trucked to the lake from as far away as Edmonton, Alberta, and stored in separate tanks contained in a parking lot near the Small Craft Center. Each chemical was pumped through hoses from the storage tank to tanks on the treatment boat in the lake. A ramp was constructed over the hoses to allow use of the foot path throughout the entire treatment period.

A tanker truck filled storage tanks on the shore.

Alum and buffer were injected into the water surface through paired hoses from tanks on the treatment boat. The injected chemicals formed small particles that settled to the lake bottom, removing phosphorus and algae from the water column as they settled. The settled aluminum binds to phosphorus in the bottom sediments to reduce the internal release of phosphorus from the sediments to the water, and limit the growth of algae and toxic cyanobacteria in the lake during the summer. The treatment goal is to prevent future closures of the lake to recreational uses due to toxic cyanobacteria for up to 10 years. The treatment plan and more information can be found on the project website.

Algal scum on the lake, before the treatment.

Previous lake-wide alum applications in 1991 and 2004 effectively limited algae blooms and improved water quality. The alum treatment is expected to be effective for up to 10 years. The alum treatment plan was developed as part of the 2016 Green Lake Phosphorous Management Plan.

If you have additional questions about the project please contact Chris Mueller, Seattle Parks and Recreation project manager at chris.mueller@seattle.gov or 206-684-0998.

Click image to see alum treatment coverage.

Minutes for April 26, 2016 Meeting

Friends of Green Lake Meeting, Tuesday 26 April 16, Hearthstone Boardroom

Convened at 7:00 PM

Attendees:
Richard FlemingPeter NestingenGayle GarmanBrian DeLucaKaren SchurrEllen HewittMike McDowell

Introductions and initial comments by Richard, then first order of business:

Richard provided:

  • update on the alum treatment activities and process, including slide show of the equipment used to apply the alum to the lake water.
  • described activities by Seattle Parks Department (SPD) to repair/replace/ modify the Densmore Drain box at the North tip of the lake. Difficulties encountered trying to reset the box at its original location. Consideration now to extent the inflow pipe further in to the lake and fabricating and installing new terminal box.

Read More »

Agenda for FOGL Meeting April 26, 2016

Room opens for socializing and conversation at 6:45 PM

  • Introductions
  • Richard Fleming
    • Recent Activities at Green Lake
  • Rob Zisette
    • Update on Alum Treatment
  • Richard Fleming
    • A To-Do List for Green Lake. Participants can suggest things within the park that need maintenance, upgrades, and/or other actions. Bring Suggestions, identifying locations if appropriate. Photos may be helpful.
    • Suggestions will be assembled into a To-Do list for review at FOGL’s May meeting and then submitted to the Parks Department
  • Ellen Hewitt
    • Webmaster’s Report
  • Gayle Garman
    • Treasurer’s Report
  • Next Meeting – May 24, 2016
  • Adjourn

Friends of Green Lake (FOGL) is a non-profit group in Seattle, Washington, whose mission is to ensure a healthy Green Lake for wildlife and recreation, for today and tomorrow.

Help Us Make a New Green Lake To-Do List

At our January Friends of Green Lake meeting, Dick Johnson, the Parks Division Director, asked FOGL to provide a list of things that needed to be done at Green Lake Park. A major portion of our April meeting will address compiling a To-Do List. You are invited to attend, participate, and contribute your ideas.

Examples of ideas that have been suggested so far are:

  • Develop a Vegetation Management Plan for the lake’s shoreline.
  • Return the Green Lake Community Center rooms that are currently being used as Parks’ Department offices to public use for classes and meetings.
  • Remove willow branches that were cut and left in the cattails near the turtle logs. The branches provide an unwanted bed for blackberries, shading out the cattails and eliminating nesting habitat for the blackbirds.

To have the most effect, FOGL’s list must be well-ordered, identify issues, and contain suggestions for appropriate corrective measures. If you have suggestions for the Green Lake To-Do List, it would be very helpful to have you submit your suggestions and concerns via the Contact tab “Your Message” area on the Friends of Green Lake website, or otherwise mail your input to:

Friends of Green Lake
PO Box 30715
Seattle, WA, 98113-0715

You can use the following format to input your suggestions or concerns:

First Name:
Last Name:
Email:
Phone:
Problem:
Location:
Suggested Action:

You may also present your input at the FOGL meeting in the Board Room at The Hearthstone on Tuesday, April 26th, 7:00 pm. An action committee will be formed and there will be voting on the projects at the May meeting.

The Green Lake Alum Treatment Begins!

From Rob Zisette, Principal Scientist, Herrera, Inc.
  and the Seattle Parks Department
Photos by Richard Flemimg

The 2016 Green Lake alum treatment will start at about 7:30 am on Tuesday April 5. Conducted by HAB Aquatic Solutions, the treatment is expected to be conducted from 6:30 am to 7 pm for five straight days ending on Saturday April 9. The treatment will be monitored on a full-time basis in accordance with the water quality monitoring plan and permit conditions. The monitoring plan is an appendix of the treatment plan that can be found at the project website.

The barge ready to be refilled. It will spread the alum treatment 12 hours a day for several days.

The alum will be applied near the water surface. It removes phosphorus from the water column as it forms small clumps and settles. It then covers the bottom sediments to further prevent the internal release of phosphorus from the sediments. The alum treatment is effective immediately upon application.

The tanker truck filling the storage tanks on the shore.

The alum treatment is intended to reduce phosphorus levels in the lake, limiting cyanobacteria (blue-green algae) blooms and improving recreational use of the lake. The alum treatment is applied from a barge on the lake. The treatment is pumped from a truck staged in the parking lot through hoses that will run over the Green Lake path to the barge. These hoses will require a small ramp to allow Green Lake path users to travel safely over them.

Algal scum on the lake, before the treatment.

Previous lake-wide alum applications in 1991 and 2004 effectively limited algae blooms and improved water quality. The alum treatment is expected to be effective for up to 10 years. The alum treatment plan was developed as part of the 2016 Green Lake Phosphorous Management Plan.

If you have additional questions about the project please contact Chris Mueller, Seattle Parks and Recreation project manager at chris.mueller@seattle.gov or 206-684-0998.

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